On Sunday at about 5 p.m., Walker allegedly refused to display or purchase a ticket to the conductor after boarding the 4:08 p.m. train in Stamford, Anders said.

At the next stop, Noroton Heights, Walker exited the train, and allegedly punched the conductor in the right eye as the worker stood on the platform checking that the station area was clear before the train resumed travel, Anders said.

The two men scuffled briefly, while commuters called police, before Walker fled into the parking lot and was detained by Darien police until transit police arrived, Anders said.

Walker was held on $50,000 bond and appeared in state Superior Court in Stamford Monday.